From f1c1b5044abb45bb70655d1c792a0ce79dea735b Mon Sep 17 00:00:00 2001
From: Chenyang Zhong <zhongcy95@gmail.com>
Date: Sun, 6 Mar 2022 02:40:06 -0500
Subject: [PATCH] venus: configs: ship displayconfig for brightness ramp rate

Android 12 allows the brightness ramp rate to be changed separately
for fast/slow and increase/decrease in float. Once loaded,
DisplayDeviceConfig has higher priority than the integer config
values in frameworks. The format definition is in [1].

There are 3 variants for the filename:

* display_id_46xxxxx.xml
* display_19xxxxx.xml
* display_port_xxx.xml

The value can be found in boot logs by grepping DisplayDeviceInfo.
On android 12, boot log reports the 46xxxxx value of the first
variant.

The xml file can be put in either product or vendor.

[1] frameworks/base/services/core/xsd/display-device-config/display-device-config.xsd

Signed-off-by: Chenyang Zhong <zhongcy95@gmail.com>
---
 configs/display_id_4630946736638489730.xml | 29 ++++++++++++++++++++++
 device.mk                                  |  4 +++
 2 files changed, 33 insertions(+)
 create mode 100644 configs/display_id_4630946736638489730.xml

diff --git a/configs/display_id_4630946736638489730.xml b/configs/display_id_4630946736638489730.xml
new file mode 100644
index 0000000..31c75c3
--- /dev/null
+++ b/configs/display_id_4630946736638489730.xml
@@ -0,0 +1,29 @@
+<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
+<!-- Copyright (C) 2020 Google Inc.
+     Copyright (C) 2022 The Pixel Experience Project
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+      http://www.apache.org/licenses/LICENSE-2.0
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<displayConfiguration>
+    <screenBrightnessRampFastDecrease>0.5</screenBrightnessRampFastDecrease>
+    <screenBrightnessRampFastIncrease>0.5</screenBrightnessRampFastIncrease>
+    <screenBrightnessRampSlowDecrease>0.04</screenBrightnessRampSlowDecrease>
+    <screenBrightnessRampSlowIncrease>0.05</screenBrightnessRampSlowIncrease>
+    <screenBrightnessMap>
+        <point>
+            <value>0.0</value>
+            <nits>2</nits>
+        </point>
+        <point>
+            <value>1.0</value>
+            <nits>1000.0</nits>
+        </point>
+    </screenBrightnessMap>
+</displayConfiguration>
\ No newline at end of file
diff --git a/device.mk b/device.mk
index 9f883df..b066a37 100644
--- a/device.mk
+++ b/device.mk
@@ -10,6 +10,10 @@ $(call inherit-product, device/xiaomi/sm8350-common/common.mk)
 # Inherit from miuicamera-venus
 $(call inherit-product-if-exists, device/xiaomi/miuicamera-venus/device.mk)
 
+# Display Device Config
+PRODUCT_COPY_FILES += \
+    $(LOCAL_PATH)/configs/display_id_4630946736638489730.xml:$(TARGET_COPY_OUT_PRODUCT)/etc/displayconfig/display_id_4630946736638489730.xml
+
 # Fingerprint
 PRODUCT_PACKAGES += \
     libudfpshandler